Are you able to underline an icon link?

For my user story I am creating an interface section to display 4 cards for an Agenda's meeting information. For one of them I have a link that appears when a meeting is on one of the cards; the link is being shown as an icon. I was asked to make the link more obvious by underlining it but I am not sure how I am able to underline an icon. I was able to make the link correctly and it appears as the icon but I can't get the underline to appear. Any ideas? Here is the code I have for it written below:

a!richTextItem(
                        text: a!richTextIcon(
                                             icon: "link",
                                             linkStyle: "STANDALONE",
                                             color: "POSITIVE",
                                             link: ri!link,
                                             showWhen: a!isNotNullOrEmpty(ri!link)
                        ),
                        style: "UNDERLINE"
), 

Right now it is shown as the green link. Thanks for the help!